Hand-controlled hydraulic press.



G. E. DAVENPORT.

yHANDCONTROLLI-QD HYDRAULIC PRESS.

l Afmcmon man M644. 1`9`r6.

1.269,060 l -Patnted'lune 191.8

3 SHEETS-SHEET 12.

TIG EOKGEl DAVENPORT of New'Jersey,

GEORGE E. nAvENronr, or cnminn, msw- JERsnY.

Enma-comunali HYDRAULIC rnnss.

Specication of Letters Patent.

-Patented June 111-, 1918..l

' Application ined nagaan, 1ere. serial No. 114,814.

To all/whom t may concern.'

Be it known that I, GEORGE a citizen of the United States, residing atCamden, in the county of Camden and State have invented certain. new anduseful Improvements in AHand-Controlled Hydraulic Presses, of which thefol' -th lowing is a specification, reference being had ,to theaccompanying drawings.

This invention relates to hydraulic presses andparticularly to'pressesof this character used for stampmg the liatrecord tablets or recorddisks used in talking machines.

One of the objects of this invention is to provide a construction ofthis 'character lwhich-is semi-'automatic in its action, in that afterbeingset byhandit is automatically released.

A. further object of this invention is to provide a press of thischaracter with die carrying plates so arranged that hot water or steammay be caused tol circulate through the plates, or cold water may becaused to circulate and in this connectionto provide means whereby `livesteam may be caused f to circulate through the die holders prior to theinsertion of the record blank and that whenhydraulic pressure isapplied, this live steam 1s immediately turned off and cold water'iscaused to automatically take its place in the circulation system of thedie or die holders. The object o'f leaving steam in the dies is to keepthe stock soft until the pressure is applied, whereupon the stock ischilled and hardens quickly.

A further object is to provide a' machine of this character with apivotally mounted buck-head which supports an upper matriX ordie andprovide means for lockin this buck-headin its operative position, 'andmeans for raising the buck-head after the locking means are released. A,

Other objectswill appear in the course of the following description.4

My invention is illustrated in the accom-V panying drawings, wherein:

Figure 1 is a section on the line 1-1 of Figv 2;

Fig. 2 is a section on' the line 2-2 of Figl;

Fig. 3 is an elevation of the upper end of the press;

Fig. 4 is a di'ametrical section through one Vof the die"holders or diesand the matrix;

andI

showing the steam 'arms 19. Extending Fig. 5 is a section on the line5-5 of Fig. 4.

Fig. 6 is a fragmentary top plan view the d1es.

Referring at my improved hydraulic press comprises a housing 10 which isprovided with a detachable the mechanism which operates the buck-headand the locking bars.

Mounted upon the upper end ofthe hous- -ing 10 is a relatively heavy`base plate 12 b ored out tn provide the cylinder .13. v Extendingupward from the base 12 on each side of the base are three standards 14,these standards being connected at their upper ends by an integral crossbar` 15, and these standards being with the base 12. tical inner, facesand outwardly wardly inclined outer faces and form guides for the pistonand for the buck-head as will be later shown.- Disposed between thestandards 14 are the ylocking arms 16 there being a pair of theselocking arms on each side The standards have ver# and down- 4 of themachine. The locking arms have more or less the same shape of thestandards, but at their upper ends are formed With the inwardlyprojecting heads 17, the under faces of which are horizontal. Theselocking bars are pivotally mounted upon transversely ex-v tending bolts18 and the locking bars extend downward below. the bolts .'18 formingdownward from the 20 which. are formed suitable character for atransverse rock shaft 21. Keyed upon this rock shaft 21. and between thebearings of the brackets 20 is a sleeve 22 having the spaced disks 23,these disks being preferably slotted so as to secure lightness. Thelower ends of the arms 19 are connectedby means of links 24 to the4disks 23 by means of bolts 25. The link 24 which engages with one pairof locking arms 16 is vpivotally connected to the disks 23 at a pointdiametrically opposite the pivotal connection ofthe other link 24. Itwill thus be seen thatiwhen the member 22 is turned in one direction,the arms 19 will be drawn together and when turned in the otherdirection the arms 19will be forced apart. For the purpose of rotatingthe shaft .21, I mount upon the shaft the crank arm 26 and mount uponabearng bracket 27,

base 12 are brackets with bearingsf'ofiany and water connections tol tothese figures, it' wi11 be seen.

base plate 11, and which incluses preferably made integral Mounted upona shaft-:28 which' has a crank' arm 'QSlS-co'nnected by a link 30 tothecrank arm 26.-

.34 is attached 'by screwsorother means to the lower end ofthe :theupper end ing plate 36 and-the die or matrix'vh'older,

.errer Portion,

v. l ing plate.,-

. Extending 'through-the base 12 and tothe center of the cylin er 13 isa-duct 32 which is connected to a `source of liquid under' pres# sure.Operating Withintthe cylinder .13 -is a loose piston 33 'whose l'faerorti'on is 're duced to ii within the .Cyl-infer, -while itswhich ispreferably formed is'` greater' in dlameter.

the cylinden Theplate" as a separate' block than .the diameter of iston.Resting upon of the b ook 33F'is an adjustdesignat'ed 37.-,is mounteduponthe adjust-.

of carrying the upperdiie,

l For the purpose l provide a buck-head 38 "which operates.v

between the standard 14 andwliich has a rearward extension Anions 40.which engage' with sup 4orting- 3?) formed with tran-j brackets 41extending upward from t ebase. The extremity of the huekfhead; arm oreintension 39 is operatively connected by means Y ot two links 42 to 'anarm 43 mounted upon weights tend to turn- I caring osition as to4'raise' uch-head may ever, into its operative position however,

.by meanso a handle 48 mounted upon the end face'of the buck-head.Mounted upon holder 49.' Y

i have the same character thebuck-head. is the 4upper die or matrix Thedies or matrix holders 37 and '49 both and one of the dies isillustrated in Figs. 4 and 5. The upper faceoi the die 3? (or the lowerface of the die 49) is recessed as at50 to receive the matrix 5 1, therebeing a central stud or pin 52'l which engages the center oi the matrix.Outward of the relatively slight recess 5@ there is a relatively deepannular. recessed whose exterior and interior walls are screwthreaded aszit-54. A locking ring 55 engages in this screw-threaded annular recess53, the locking ring having a flange 56 whichl projects over the edgeofthe matrix. 'llh'e locking ring of course, has openings 5i for thereception of a wrench. -4 On its under face the die is formed withv arelatively wide annular recessdeiining an outer wall 59 anda centralhub'O. The 'inner face of the outer wall and the outer face of the hub]are screw-threaded. The

' die plate i's'formcd with a plurality. of ap?. 'v

p roximatelyconcentric grooves 61 forming circulating ooilsar'ranged Yasillustrated in the'shaft 28 is an operating casing designated generallywater.: The duct ,able character.

ferrand in hydraulie'presses'for `contro 'ton from expandin lows. Therecord ne s of the two stock has been placed upon the lower die,-buekhead is then pulled down which closes'- the buckvhead movesdownward it bears against .the beveled ends-ff? Fi 5, and closing the'open `:sides co1' sis a plate 62 which has`screw.-tlurearl'edy enga'Preferably i there are. grooves, 'both merging the center of the fvcally opposite portions of the die. 'The oeninto each other at passage63 'to .an outletduct or pipe and passage gement with hub-'GO- and 4thewall 59.5 two serie'spf {these} "I0 e hut endlng at dlametri- 'ter ofthe die is connected byj'means oflajl t e areconnectedone to asteam'inletpipe' -66 andthe other to` acoldwater inlet pipe 67.

rlhese pipes Gdand 67 -ext'end 68 of anyA suit able .character trolledby a lever' 69 operating over a sector 7G. 'lf his valve casing is, ofcourse, connect'- ed to a, source of steam and a souroeof 63 ofeachdie'is connected to a waste. pipe 7l.. The detailed construc-l tionothe casing v:md valves is notillustrated inasmuch as t a 'source'oi flany suitable pipe to a lwaste pipe 73;f the pipe 72 and .waste a valvein turn ,operated have not shown in detail the ,constructipn for' thisvalve as it isv the valve ordinarily ng and the outlet 72' which' isconnected the inlet of water theretov therefrom. Preferably the iformspart of the-piston is provided lwith source ofcold water so as to ke@the pisin the cylinder.

The operation o the inventlon 1s as upon the bottom matrix plate.. Live-steam 1s flowingthrough blockitIY which i loc a water way therethroughconnected witharoi! stock which 4is ini a pre." heated and relatlvelysoft state is placed' die 37 which supports the to a valve v l 'au',havinggtherein valves con-A is maybe of any suit# 'llhe duct' 32'isconnected to' water under 'pressure by means yao Thdsp'assage throu h`pipe is controlled y by-a lever 74. 'li-,r

the double coils or channels oi?l thislower die land -the'upper di Theobject of hav? in steam-circulating through these chan-` until' thepressure is applied, as the stock, when chilled, hardens quickly. h

the machine. As

of the locking heads 17 andI forces the lock-v ing heads apart. vlAs;soon as the buck-heald` has Vpassed. below the locking' heads, lookingbars 16 Vare shifted. inward so as vto hold the buck-head from anyupward movel ment. 'll'he linstant the machine is closed hy;`

l pressure.- of 220,0 pounds per square applied-,- the live steam `11odies is to keep the stock l- Y( After the thusbringmg the rec ice

,claim 1s:

mennen l Cold through the dies for about water is let flow thirt)7seconds, the pressure on he piston released and the operating leve'r isthrown everto the-,posi- .tion which will open the lock bers whichallows the buck-head to rise to an open position.` through the action of'the counter- Weights `47. The record is then taken out,

fresh stockis placed inthe press and the foregoing operation' repeatedftThis machine can turn outjover 550 'records in e day of ten hours.

Having described my inventiomvvhat l. A die'of the'character describedhaving a' recessed outer fac@v groove deeperthan the screw-threadedinterior and' exterior walls, and means lfor holding a `matrix in seidrecess comprising'- a serewethreaded ringlhe after whichy it is turnedoit;

,the `pair 4 an outer annular recess and having lng e enge on its inneredge and dapted to engage vin said screw-threaded recess.

In a press for stamping phonographie records, e die 'having e, peir offluid circulating grooves, of channels formed-therein, .of ehannelsbeing approximately parallel and extending in e spiral course :fromI thecenter of the die toward the eireum'ferenee thereof, the channelterminating at diemetricallv on osite oints of .the die there being enoutlet duct communicating with both of said channels at their innerends,l the outer ends of the Channels being respectively connected to asource of steam and a source of cold Water.

In testimony whereof I hereunto aiix Iy signaturefin the preseneeof twoWitnesses. p GEORGE E. DAVENPORT.

Witnessesr CEAS. B.. Bonntron,v

RALPH We HAUTES'.

